NOISSUE mark used accounts/sessions in selection menus

api/logic/minecraft/MinecraftInstance.cpp

@@ -19,6 +19,7 @@
 #include "launch/steps/TextPrint.h"
 #include "minecraft/launch/LauncherPartLaunch.h"
 #include "minecraft/launch/ModMinecraftJar.h"
+#include "minecraft/launch/ClaimAccount.h"
 #include "java/launch/CheckJava.h"
 
 #include <icons/IIconList.h>
@@ -425,6 +426,7 @@ std::shared_ptr<LaunchTask> MinecraftInstance::createLaunchTask(AuthSessionPtr s
 	// if we aren't in offline mode,.
 	if(session->status != AuthSession::PlayableOffline)
 	{
+		process->appendStep(std::make_shared<ClaimAccount>(pptr, session));
 		process->appendStep(std::make_shared<Update>(pptr));
 	}
 

api/logic/minecraft/auth/AuthSession.h

@@ -6,6 +6,8 @@
 
 #include "multimc_logic_export.h"
 
+class MojangAccount;
+
 struct User
 {
 	QString id;
@@ -46,6 +48,7 @@ struct MULTIMC_LOGIC_EXPORT AuthSession
 	bool auth_server_online = false;
 	// Did the user request online mode?
 	bool wants_online = true;
+	std::shared_ptr<MojangAccount> m_accountPtr;
 };
 
 typedef std::shared_ptr<AuthSession> AuthSessionPtr;

api/logic/minecraft/auth/MojangAccount.cpp

@@ -275,4 +275,26 @@ void MojangAccount::fillSession(AuthSessionPtr session)
 		session->session = "-";
 	}
 	session->u = user();
+	session->m_accountPtr = shared_from_this();
+}
+
+void MojangAccount::decrementUses()
+{
+	Usable::decrementUses();
+	if(!isInUse())
+	{
+		emit changed();
+		qWarning() << "Account" << m_username << "is no longer in use.";
+	}
+}
+
+void MojangAccount::incrementUses()
+{
+	bool wasInUse = isInUse();
+	Usable::incrementUses();
+	if(!wasInUse)
+	{
+		emit changed();
+		qWarning() << "Account" << m_username << "is now in use.";
+	}
 }

api/logic/minecraft/auth/MojangAccount.h

@@ -24,6 +24,7 @@
 
 #include <memory>
 #include "AuthSession.h"
+#include "Usable.h"
 
 #include "multimc_logic_export.h"
 
@@ -60,7 +61,10 @@ enum AccountStatus
  * Said information may include things such as that account's username, client token, and access
  * token if the user chose to stay logged in.
  */
-class MULTIMC_LOGIC_EXPORT MojangAccount : public QObject
+class MULTIMC_LOGIC_EXPORT MojangAccount :
+	public QObject,
+	public Usable,
+	public std::enable_shared_from_this<MojangAccount>
 {
 	Q_OBJECT
 public: /* construction */
@@ -157,6 +161,11 @@ protected: /* variables */
 	// current task we are executing here
 	std::shared_ptr<YggdrasilTask> m_currentTask;
 
+protected: /* methods */
+
+	void incrementUses() override;
+	void decrementUses() override;
+
 private
 slots:
 	void authSucceeded();

api/logic/minecraft/launch/ClaimAccount.cpp

@@ -0,0 +1,24 @@
+#include "ClaimAccount.h"
+#include <launch/LaunchTask.h>
+
+ClaimAccount::ClaimAccount(LaunchTask* parent, AuthSessionPtr session): LaunchStep(parent)
+{
+	if(session->status == AuthSession::Status::PlayableOnline)
+	{
+		m_account = session->m_accountPtr;
+	}
+}
+
+void ClaimAccount::executeTask()
+{
+	if(m_account)
+	{
+		lock.reset(new UseLock(m_account));
+		emitSucceeded();
+	}
+}
+
+void ClaimAccount::finalize()
+{
+	lock.reset();
+}

api/logic/minecraft/launch/ClaimAccount.h

@@ -0,0 +1,35 @@
+/* Copyright 2013-2016 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <launch/LaunchStep.h>
+#include <minecraft/auth/MojangAccount.h>
+
+class ClaimAccount: public LaunchStep
+{
+	Q_OBJECT
+public:
+	explicit ClaimAccount(LaunchTask *parent, AuthSessionPtr session);
+	void executeTask() override;
+	void finalize() override;
+	bool canAbort() const override
+	{
+		return false;
+	}
+private:
+	std::unique_ptr<UseLock> lock;
+	MojangAccountPtr m_account;
+};